2014 GL 550 4matic air pump relay
What is the part number and where is it located (in the cabin, under the hood, trunk area)?
The air pump is part number 166-320-01-04-80 (remanufactured) and is located under the right front inner wheel well, along with the air pump dryer and plastic air lines. Rear air spring is part number 166-320-03-25.
Thank you all,
Stephen
p.s. if anyone needs to know to replace with main and/or auxiliary radiator let me, ping me. Just finished that as well.





